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Head-to-head

Cooper Discoverer M+S Sport vs Sumitomo Encounter AT — Compared

Our Relative Score blends 60% objective test data with 40% owner-review signal — so any two tires can be compared even if they were never tested on the same day.

Tire A Cooper

Cooper Discoverer M+S Sport

High Performance Winter tire

Cooper Discoverer M+S Sport tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
75/100
Owner ratings
Dry
72
Wet
65
Snow
–
Comfort
85
Noise
–
Treadwear
75
Handling
65
Check price on Amazon

Prices change daily — check the retailer for your size.

VS
Tire B Sumitomo

Sumitomo Encounter AT

Sumitomo Encounter AT tread pattern
Objective (60%)
–/100
No test data yet
User signal (40%)
82/100
Owner ratings
Dry
88
Wet
88
Snow
85
Comfort
86
Noise
86
Treadwear
79
Handling
85
Check price on Amazon

Prices change daily — check the retailer for your size.

VerdictWinner: Sumitomo Encounter AT — better wet, handling and dry. It leads or ties in every category we score.
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Category breakdown

7 categories, side by side

Each bar is the Relative Score for that category. Expand a tile to see the test results and owner ratings behind it.

Dry

Weight: Neutral
Score (0–100) Encounter AT leads by 16
A
72
B
88
Why this score
SourceDiscoverer M+S SportEncounter AT
SimpleTire owners – 98

Wet

Weight: Important
Score (0–100) Encounter AT leads by 23
A
65
B
88
Why this score
SourceDiscoverer M+S SportEncounter AT
SimpleTire owners – 95

Snow

Weight: Neutral
Score (0–100)
A
–
B
85
Why this score
SourceDiscoverer M+S SportEncounter AT
SimpleTire owners – 90

Comfort

Weight: Neutral
Score (0–100) Encounter AT leads by 1
A
85
B
86
Why this score
SourceDiscoverer M+S SportEncounter AT
SimpleTire owners – 92

Noise

Weight: Neutral
Score (0–100)
A
–
B
86
Why this score
SourceDiscoverer M+S SportEncounter AT
SimpleTire owners – 89

Treadwear

Weight: Important
Score (0–100) Encounter AT leads by 4
A
75
B
79
Why this score
SourceDiscoverer M+S SportEncounter AT
SimpleTire owners – 89

Handling

Weight: Neutral
Score (0–100) Encounter AT leads by 20
A
65
B
85

Scores at a glance

CategoryCooper Discoverer M+S SportSumitomo Encounter AT
Relative Score 72 85
Dry 72 88
Wet 65 88
Snow – 85
Comfort 85 86
Noise – 86
Treadwear 75 79
Handling 65 85

Higher is better. The Relative Score follows your weights below; category scores do not change.

Personalize

Weight the categories that matter to you

Wet grip and treadwear start at “Important” — the two things buyers rank highest. Move the sliders and the scores update instantly.

Neutral
NoneLessNeutralMoreMost
Important
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Important
NoneLessNeutralMoreMost
Neutral
NoneLessNeutralMoreMost
Recomputed
Headline score

Tire A

Tire B

Only categories both tires have data for count toward the headline score.

Specifications

Specs side by side

Attribute A · Cooper Discoverer M+S Sport B · Sumitomo Encounter AT
CategoryHigh Performance Winter tire—
Vehicle typeSUV and 4x4—
Sizes available—15
Rim diameters—16″ – 20″
Tread depth—13/32″
UTQG—660 A B
Treadwear warranty—60,000 mi
Sidewall—Blackwall
Max pressure—51 psi
Final verdict

Which one should you actually buy?

Cooper

Sumitomo

Winner: Sumitomo Encounter AT — better wet, handling and dry. It leads or ties in every category we score.

Pick tire B Your priority is wet-weather safety

Sumitomo Encounter AT scores 88 vs 65 on wet.

Pick tire B You enjoy sharp, responsive handling

Sumitomo Encounter AT scores 85 vs 65 on handling.

Pick tire B You want the most grip on dry roads

Sumitomo Encounter AT scores 88 vs 72 on dry.

Pick tire B You want the longest tread life

Sumitomo Encounter AT scores 79 vs 75 on treadwear.

Tire A · Cooper Discoverer M+S Sport
Check price on Amazon
Tire B · Sumitomo Encounter AT
Check price on Amazon

How do we compare tires?

Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements) normalized against the best tire in each test and weighted toward recent tests. 40% comes from thousands of owner reviews collected from retailers and review sites. When a tire has only one of the two, we use what exists and say so.

Community buzz from Reddit and forums is shown for context only — it never changes the score.